/Engine/Source/Runtime/Engine/Classes/Engine/DataTable.h
Called whenever new data is imported into the data table via CreateTableFrom*; Alerts each imported row and gives the row struct a chance to operate on the imported data
void OnPostDataImported ( [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & OutCollectedImportProblems )